Eutech™ CyberScan CD 650 is a handheld waterproof Conductivity/ TDS/ Resistivity/ Salinity/ Dissolved Oxygen multi-parameter meter. Equipped with the sophistication of laboratory meters, Eutech's CyberScan CD650 allows the simultaneous measurement and display of conductivity and dissolved oxygen. Intuitive with built-in guidance prompts and trouble-shooting tips, the meter comes with advanced wireless communications technology for easy meter-to-PC data transfer, and is IP67 waterproof for harsh applications. Features Simultaneously measures and displays three parameters ±1% full scale accuracy at 3-decimal resolution across a wide measurement range Accepts two-cell and four-cell conductivity probe to measure up to 500 m/s — meter measures pure water! Selectable multi-point calibration for more accurate conductivity measurements or single-point calibration for quick, convenient calibration with no mistakes Measures 90.00mg/L in DO concentration and 600% in DO saturation—one of the widest dissolved oxygen measurement ranges offered in the handheld market today Fast and easy DO calibration with 100% calibration option against atmospheric air or 0% calibration against a zero solution Salinity, Temperature and Pressure Compensation—accurate readings under varying conditions No warm up time required with galvanic system of measurement One-Glance-Tells-All Screen Display with Backlight Electrode status report, calibration data and simultaneous display of up to 4 parameters Recorded readings individually stamped with time and date in GLP compliant format Auto-logging meter saves readings automatically within seconds to prevent data loss Non-Volatile Memory protects information and meter settings, even when batteries run out Four Levels of Password Protection prevents tampering or accidental data deletion